Tikhonou, A.N. Vasileva, A.B. Sueshnikov, A.G. <br/><br/>
Differential equations 

 - New York  , Springer-Verlag  1985 
 - viii,238 p.  22 cm.  HB 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Differential equations
<br/><br/><label>Dewey Class. No.: </label>515.35  / TIK